PKS2005-489 at VHE: four years of monitoring with HESS and simultaneous multi-wavelength observations
2010
Abstract
The SED of PKS 2005-489, constructed for the first time with contemporaneous data on both humps, shows significant evolution. The large flux variations in the X-ray band, coupled with weak or no variations in the VHE band and a similar spectral behavior, suggest the emergence of a new, separate, harder emission component in September 2005.